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This 242 million year old twinned calcite sample has a hydrothermal origin and is from the in © 2018 - Microcosmo Art
microcosmoart.it/en/rocce/calci…

This 242 million year old twinned calcite sample has a hydrothermal origin and is from the #DolomiteMountains in #Italy #ThinSectionThursday © 2018 - Microcosmo Art
microcosmoart.it/en/rocce/calci…
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